Finding the Fourth Proportional to 99,754.05, 137,663.91 and 54,434.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,754.05 : 137,663.91 = 54,434.52 : x
2. Step 2: Convert to fraction form
   99,754.05/137,663.91 = 54,434.52/x
3. Step 3: Cross multiply
   99,754.05x = 137,663.91 × 54,434.52
4. Step 4: Simplify right side
   99,754.05x = 7,493,668,590.00
5. Step 5: Solve for x
   x = 7,493,668,590.00/99,754.05
6. Step 6: Final answer
   x = 75,121.45